#include <lttng/events.h>
#include <lttng/msgpack.h>
#include <lttng/event-notifier-notification.h>
+#include <wrapper/barrier.h>
/*
* The capture buffer size needs to be below 1024 bytes to avoid the
{
struct lttng_event_notifier_group *event_notifier_group = event_notifier->group;
+ struct lttng_counter *error_counter;
size_t dimension_index[1];
int ret;
+ /*
+ * lttng_smp_load_acquire paired with lttng_smp_store_release orders
+ * creation of the error counter and setting error_counter_len
+ * before the error_counter is used.
+ */
+ error_counter = lttng_smp_load_acquire(&event_notifier_group->error_counter);
/* This group may not have an error counter attached to it. */
- if (!event_notifier_group->error_counter)
+ if (!error_counter)
return;
dimension_index[0] = event_notifier->error_counter_index;
- ret = event_notifier_group->error_counter->ops->counter_add(
- event_notifier_group->error_counter->counter,
+ ret = error_counter->ops->counter_add(error_counter->counter,
dimension_index, 1);
if (ret)
WARN_ON_ONCE(1);